Teledyne 3000PAEU - General purpose percent oxygen analyzer - Manual (Page 31)

Percent Oxygen Analyzer Installation 3
3-9 Teledyne Analytical Instruments
signed to Range 1 ID, Medium range is assigned to Range 2 ID, and High
range is assigned to Range 3 ID. The fourth range is reserved for the Air Cal
Range (25%). Table 3-4 lists the pin connections.
Table 3-4: Range ID Relay Connections
Pin Function
21 Range 1 ID Contact
38 Range 1 ID Contact
22 Range 2 ID Contact
39 Range 2 ID Contact
19 Range 3 ID Contact
18 Range 3 ID Contact
34 Range 4 ID Contact (Air Cal)
35 Range 4 ID Contact (Air Cal)
Network I/O: A serial digital input/output for local network protocol.
At this printing, this port is not yet functional. It is to be used for future
options to the instrument. Pins 13 (+) and 29 (–).
Remote Valve Connections: The 3000PA is a single-chassis instru-
ment, which has no Remote Valve Unit. Instead, the Remote Valve connec-
tions are used as a method for directly controlling external sample/zero/span
gas valves. See Figure 3-5.
Figure 3-5: Remote Valve Connections
The voltage from these outputs is nominally 0 V for the OFF and
15 V dc for the ON conditions. The maximum combined current that can be
pulled from these output lines is 100 mA. (If two lines are ON at the same
time, each must be limited to 50 mA, etc.) If more current and/or a different
voltage is required, use a relay, power amplifier, or other matching circuitry
to provide the actual driving current.